@import '../variables';
@import '../mixins';

$size: 25px;

@keyframes rotate_pacman_half_up  {
    0% {
         transform:rotate(270deg);
    }
    50% {
         transform:rotate(360deg);
    }
    100% {
         transform:rotate(270deg);
    }
}

@keyframes rotate_pacman_half_down  {
    0% {
         transform:rotate(90deg);
    }
    50% {
         transform:rotate(0deg);
    }
    100% {
         transform:rotate(90deg);
    }
}

@mixin pacman_design(){
    width: 0px;
    height: 0px;
    border-right: $size solid transparent;
    border-top: $size solid $primary-color;
    border-left: $size solid $primary-color;
    border-bottom: $size solid $primary-color;
    border-radius: $size;
}

@keyframes pacman-balls {
  75% {
    opacity: 0.7;
  }
  100% {
    transform: translate(-4 * $size, -$size / 4);
  }
}

@mixin ball-placement($n:3, $start:0) {
  @for $i from $start through $n {
    > div:nth-child(#{$i + 2}) {
      animation: pacman-balls 1s ($i * .33s) infinite linear;
    }
  }
}

.pacman {
  @include ball-placement();

  position: relative;

  > div:first-of-type {
    @include pacman_design();
    animation: rotate_pacman_half_up 0.5s 0s infinite;
  }

  > div:nth-child(2) {
    @include pacman_design();
    animation: rotate_pacman_half_down 0.5s 0s infinite;
    margin-top: -2 * $size;
  }

  > div:nth-child(3),
  > div:nth-child(4),
  > div:nth-child(5),
  > div:nth-child(6) {
    @include balls();

    width: 10px;
    height: 10px;

    position: absolute;
    transform: translate(0, -$size / 4);
    top: 25px;
    left: 100px;
  }
}